Abstract The presented study proves the possibility of modelling variable optical properties actuated by a temperature inside the layer of phase change material (PCM) placed in a glass container. The new approach was implemented in ESP-r simulation tool by refining solar.F subroutine. The paper presents the results of numerical analysis of complex, triple glazed PCM-window. The optical properties substitution due to the change of phase is executed by refined control algorithm for windows. The idea of the control/actuator algorithm and its implementation in ESP-r software was described. The new approach was computationally tested for office room equipped with triple glazed window. The outer cavity was filed with paraffin. Five different paraffin waxes were analysed as a PCM filling and compared with traditional triple glazed window. The optical properties of the whole glazing used in the simulations were determined experimentally for liquid and solid state of PCM. The results were analysed in terms of energy for cooling, energy for lighting, visual discomfort, glare effect and thermal discomfort. It was concluded that there is none optimal type of PCM, and the best solution is to divide the glazing into sections filled with PCM with different melting temperatures.

中文翻译：

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具有温度相关光学特性的玻璃结构中的热过程建模 - PCM 窗口示例

摘要 所提出的研究证明了对由放置在玻璃容器中的相变材料 (PCM) 层内的温度驱动的可变光学特性进行建模的可能性。新方法通过改进solar.F 子程序在ESP-r 仿真工具中实现。本文介绍了复杂的三层玻璃 PCM 窗口的数值分析结果。由相位变化引起的光学特性替换由窗口的精细控制算法执行。描述了控制/执行器算法的思想及其在 ESP-r 软件中的实现。新方法针对配备三层玻璃窗的办公室进行了计算测试。外腔用石蜡填充。将五种不同的石蜡作为 PCM 填充物进行分析，并与传统的三层玻璃窗进行比较。模拟中使用的整个玻璃的光学特性是针对 PCM 的液态和固态通过实验确定的。根据冷却能量、照明能量、视觉不适、眩光效应和热不适对结果进行分析。得出的结论是，没有最佳类型的 PCM，最好的解决方案是将玻璃分成不同熔化温度的 PCM 填充部分。